.TH nfc-anticol 1 "June 26, 2009" "libnfc" "libnfc's examples" .SH NAME nfc-anticol \- Demonstration of NFC anti-collision command line tool based on libnfc .SH SYNOPSIS .B nfc-anticol .SH DESCRIPTION .B nfc-anticol is an anti-collision demonstration tool for ISO/IEC 14443-A tags, performed by custom constructed frames. The first frame must be a short frame which is only 7 bits long. Commercial SDK's often don't support a feature to send frames that are not a multiple of 8 bits (1 byte) long. This makes it impossible to do the anti-collision yourself. The developer has to rely on closed proprietary software and should hope it does not contain vulnerabilities during the anti-collision phase. Performing the anti-collision using custom frames could protect against a malicious tag that, for example, violates the standard by sending frames with unsupported lengths. Note that this is only a demonstration tool, which can not handle multiple tags as real life anti-collisions with multiple tags generate "messy" bits which are neither 0 nor 1. .SH BUGS Please report any bugs on the .B libnfc issue tracker at: .br .BR http://code.google.com/p/libnfc/issues .SH LICENCE .B libnfc is licensed under the GNU Lesser General Public License (LGPL), version 3. .br .B libnfc-utils and .B libnfc-examples are covered by the the BSD 2-Clause license. .SH AUTHORS Roel Verdult .PP This manual page was written by Romuald Conty . It is licensed under the terms of the GNU GPL (version 2 or later).